Java Email Receiver System: Features and Functionality

This is a functional diagram for a Java-based email receiving system:

1. 'User Login': Users log into the system by providing their username and password.
2. 'Email List': The system displays the user's inbox list, including the sender, subject, and date of each email.
3. 'Email Viewing': Users can select an email and view its detailed content, including the sender, subject, body, and attachments.
4. 'Email Search': Users can search for emails using keywords and view matching email lists.
5. 'Email Labeling': Users can label emails, such as marking them as read, starred, or important.
6. 'Email Reply': Users can reply to emails and choose whether to include the original email content.
7. 'Email Forwarding': Users can forward emails to other recipients and choose whether to include the original email content.
8. 'Email Deletion': Users can delete emails, moving them to the trash bin or deleting them permanently.
9. 'Email Export': Users can export emails as files, such as PDF or text files.
10. 'Email Settings': Users can configure email settings, such as auto-forwarding, filters, and spam filtering.
11. 'Email Notifications': The system can send email notifications to users, such as new email notifications and important email notifications.

This is a simple functional diagram of an email receiving system. The specific implementation details and UI design can be adjusted based on actual needs.